STORY: CBC News reported a heavy police presence on the indigenous reserve in Saskatchewan, about 320 km (200 miles) north of the provincial capital of Regina, where Sunday's bloodshed shocked a country largely unaccustomed to deadly bouts of mass violence.
Hours later, however, the Royal Canadian Mounted Police (RCMP) said its "investigation has determined" the suspect, Myles Sanderson, 30, "is not located in the community" of the reserve and that authorities were continuing to search for him.
Sanderson remained at large and possibly injured, police said after investigators on Monday found his accused accomplice and older brother, Damien Sanderson, 31, dead in a grassy area of the James Smith Cree Nation.
The pair are suspected of killing 10 people and wounding 18 others in a stabbing rampage in the James Smith Cree reserve and nearby village of Weldon, roiling an indigenous community of 3,400 people in one of the deadliest attacks in Canada's modern history. Read full story
Among the surviving victims, 10 remained hospitalized as of Tuesday afternoon, seven listed in stable condition and three in critical, health authorities said.
The Regina police chief, Evan Bray, said late Monday the search for Sanderson was focused in that city, but in a videotaped Twitter update posted on Tuesday said the manhunt had "expanded into the province."
The direction appeared to shift back to the vicinity of the crime scene earlier Tuesday as the RCMP in Saskatchewan issued an emergency alert saying its officers were responding to reports of a "possible sighting" of the suspect on the James Smith Cree reserve.
The alert, which initially warned local residents to shelter in place as a precaution, was updated three hours later to say Sanderson was not found there, that his whereabouts remained unknown, and the public should "take appropriate precautions."